OGP Thumbnail Design 2025 — Legible, Lightweight, On-Frame

Published: Sep 19, 2025 · Reading time: 1 min · By Unified Image Tools Editorial

Intro

The English translation of this article is in progress. For the full Japanese version, see /ja/articles/ogp-thumbnail-design-2025.

Key resources you can use right away:

OGP generator tool: OGP Thumbnail Maker
Image compressor: Image Compressor
Format converter: Format Converter
Image color management (article): Correct Color Management & ICC Profile Strategy 2025 — A Practical Guide for Stable Web Image Color

Recommended baseline (quick notes):

Aspect ratio 1200×630 (1.91:1)
Keep critical text in the central 60%; apply ≥10% safe margins on all sides
Minimum readable size: roughly 40–48px for JP/complex glyphs (adjust per language)
Keep file size around 200–400 KB; prefer WebP, try AVIF if it doesn’t break

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